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OSTM/Jason-2: Telemetry

Entry ID: gov.noaa.class.J2-TEL

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Summary

Abstract: ABSTRACT: OSTM/JASON-2 is a follow-on mission continuing the TOPEX/Poseidon and Jason-1, and is designed to ensure continuity of high quality measurements for ocean science and to provide operational products for assimilation and forecasting applications. The Jason-2 satellite was launched on 20 June 2008 and reached its nominal repetitive orbit on 4 July 2008. This collection of data contains ... OSTM/Jason-2 telemetry data. Dataset consists of raw Level-0 telemetry data from the Jason-2 spacecraft. There are three datatypes available: Housekeeping Telemetry - Recorded (HKTM-R) is stored on the spacecraft for later downlink, Payload Telemetry 1 (PLTM-1) is the payload science data from the core-mission payloads: Poseidon-3, DORIS, AMR, and GPSP and Payload Telemetry 2 (PLTM-2) is the payload science data from the passenger mission of opportunity payloads: CARMEN-2, L2T2 and LPT. They are available as CCSDS packet files. These data are archived at the National Oceanographic Data Center (NODC) as accession 0044986 (http://www.nodc.noaa.gov/cgi-bin/search/prod/accessionsView.pl/deta...) and distributed through the NOAA/NESDIS Comprehensive Large Array-data Stewardship System (CLASS, http://www.class.noaa.gov).

SUPPLEMENTAL INFORMATION: Satellite altimetry data applications include validation and assimilation into global wave models, high seas hazards monitoring, sea surface height and ocean currents (hurricane intensity forecasts and assimilation into operational ocean models, multi-mission altimetry, fisheries, and marine transport. Jason-2 raw telemetry downlinked to ground stations is forwarded to the quality control and processing centres. Telemetry is then processed to obtain level 1 data, i.e., data that are timed and located, expressed in the appropriate units, and checked for quality. (Jason-2's ground segment is a distributed system between NASA, CNES, Eumetsat and NOAA. On the terms and conditions specified with the quadripartite agreement for the Jason-2 project: raw data of the Poseidon3 altimeter, DORIS and the radiometer are processed by the NOAA and Eumetsat centres to product near-real time altimetry data (OGDR); raw data of the Poseidon-3 altimeter and the radiometer are only processed by the mission centre at CNES to product delayed time altimetry data (IGDR; S-IGDR, GDR and S-GDR)). Level 0 and Level 1 satellite altimetry data are of limited usefulness as they have not been processed for precise quality control, and are not typically widely distributed.

CURRENTNESS REFERENCE: ground condition

SPATIAL DATA ORGANIZATION INFORMATION
Indirect Spatial Reference: Jason-2 was placed into the same N-S orbit around the Earth as Jason-1, at an altitude of 1,336 kilometers, inclined 66 degrees, to provide virtually complete coverage of ice-free oceans.
Direct Spatial Reference: Point
SDTS Point and Vector Object Type: Point

NATIVE: CCSDS (Consultative Committee on Space Data System) packet files

Electronic download (FTP) of the data is free. There is a fee for copies of data on physical media. Optical disks are $25.00 per unit and magnetic tape is $100 per unit. Price does not include additional service and handling costs.

Purpose: PURPOSE: High-precision ocean altimetry measures the distance between a satellite and the ocean surface to within a few centimeters. Accurate observations of variations in sea surface height (ocean topography) provide scientists with information about the speed and direction of ocean currents and heat stored in the ocean. This information, in turn, reveals global climate variations. These telemetry data are further processed through Levels 1 and 2 in order to develop ocean analyses products.

Related URL

Link: GET DATA

Description: Download options for OSTM/Jason-2: Telemetry files that are archived and distributed at CLASS.

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: 66.0

S: -66.0

E: 180.0

W: -180.0

Data Set Citation

Dataset Originator/Creator: DOC/NOAA/NESDIS/OSDPD > Office of Satellite Data Processing and Distribution, NESDIS, NOAA, U.S. Department of CommerceEUMETSAT > European Meteorological Satellite Organisation

Dataset Title: OSTM/Jason-2: Telemetry

Dataset Release Date: 2008-12-15

Dataset Release Place: Silver Spring, MD

Dataset Publisher: NOAA National Oceanographic Data Center (through the CLASS distribution system)

Data Presentation Form: raw (level 0) data files

Online Resource: http://www.class.noaa.gov/nsaa/products/search?sub_id=0&datatype_fa...

Temporal Coverage

Start Date: 2008-07-01

Location Keywords

GEOGRAPHIC REGION > GLOBAL OCEAN

Science Keywords

OCEANS > COASTAL PROCESSES > SEA SURFACE HEIGHT

OCEANS > OCEAN WAVES > SIGNIFICANT WAVE HEIGHT

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

ELEVATION

OCEANS

Platform

OSTM/JASON-2

Instrument

LRA > Laser Retroreflector Array

DORIS > Doppler Orbitography and Radiopositioning Integrated by Satellite

Project

ESIP > Earth Science Information Partners Program

Quality ATTRIBUTE ACCURACY REPORT: The sea surface height shall be provided with a global and ultimate rms accuracy of 3.4 cm (1 sigma) over 1 second averages along JASON-1 ground-tracks for typical sea-state conditions of 2 m SWH and 11 dB sigma-naught. The accuracy on wind speed in IGDR products shall be 1.6 m/s. Near Real Time Altimeter Validation System Reports (NRTAVS)are daily and cover the previous ...

Access Constraints ACCESS CONSTRAINTS: All telemetry data are restricted to the project team and users will only see listed those datatypes upon which they can search.

DISTRIBUTION LIABILITY: While NESDIS makes every effort to ensure that its databases are error-free, errors do occur. We ask that you notify us immediately of any errors that you discover in our data. We will make every effort to correct ...

Use Constraints All telemetry data are restricted to the project team.

Ancillary Keywords

telemetry

Jason-2

altimetry

Data Set Progress

IN WORK

Data Center

Comprehensive Large Array-data Stewardship System, NOAA, U.S. Department of Commerce

Data Center URL: http://www.class.noaa.gov/
Dataset ID: OSTM/Jason-2_Telemetry

Data Center Personnel
Name: NOAA'S CLASS HELP DESK Email: info at class.noaa.gov Contact Address: 151 Patton Avenue City: Asheville Province or State: NC Postal Code: 28801-5001 Country: USA

Distribution

Distribution Size: 240949.8

Distribution Format: CCSDS packet files

Fees: FTP is free. Optical disks = $25.00, magnetic tape = $100 + service and handling

Personnel

YONGSHENG ZHANG

Role: TECHNICAL CONTACT

Role: DIF AUTHOR

Phone: 301-713-3272 x126

Fax: 301-713-3302

Email: yongsheng.zhang at noaa.gov

Contact Address:

NOAA National Oceanographic Data Center

E/OC1 SSMC3, 4th floor, Room 4701

1315 East-West Highway

City: Silver Spring

Province or State: MD

Postal Code: 20910

Country: USA

SHERI PHILLIPS

Role: DIF AUTHOR

Phone: 301-713-3280 x127

Fax: 301-713-3302

Email: sheri.phillips at noaa.gov

Contact Address:

1315 East-West Highway, E/OC1, SSMC3, 4th Floor

City: Silver Spring

Province or State: MD

Postal Code: 20910

Country: U.S.A.

Creation and Review Dates

DIF Creation Date: 2010-01-07

Last DIF Revision Date: 2011-11-04

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